Essays about: "spinor-helicity formalism"

Showing result 1 - 5 of 6 essays containing the words spinor-helicity formalism.

1. 1. Spinor-Helicity Formalism and ScatteringAmplitudes in Various Dimensions

   University essay from Uppsala universitet/Teoretisk fysik

   Author : Chen Huang; [2023]
   Keywords : ;

   Abstract : In recent decades, spinor-helicity formalism has gained popularity as a useful tool for studyingscattering amplitudes in four dimensions. This formalism has been extended to higher dimensions,but there is still much work to be done around its application. READ MORE

3. 2. Pure Yang-Mills amplitudes in 5 Dimensions : A study of vector boson amplitudes at 4 and 5 points

   University essay from Uppsala universitet/Teoretisk fysik

   Author : Athanasios Voutouras; [2023]
   Keywords : Yang-Mills; Scattering; Amplitudes; QFT;

   Abstract : In this text we explore the case of pure Yang-Mills amplitudes in 5 spacetime dimensions for vector particles. Extending current toolsets such as the Spinor-Helicity formalism in 5D would be beneficial to the study of the various cases of super Yang-Mills and supergravity. READ MORE

4. 3. A numerical implementation of the chirality-flow formalism

   University essay from Lunds universitet/Teoretisk partikelfysik - Geonomgår omorganisation; Lunds universitet/Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation

   Author : Zenny Wettersten; [2022]
   Keywords : chirality-flow; chirality; flow; spinor-helicity; tree-level; diagram; amplitude; generator; numerical; Physics and Astronomy;

   Abstract : The chirality-flow formalism has proven to make amplitude calculations in the Standard Model analytically simple in comparison to previously established formalisms. To test the viability of the chirality-flow formalism for numerical implementations, a Chiral Automized Flow Extension (CAFE) for MadGraph5_aMC@NLO has been developed to compare amplitude evaluation time scaling between the two. READ MORE

5. 4. Employing the little group symmetry within the spinor-helicity formalism to constrain scattering amplitudes

   University essay from Lunds universitet/Teoretisk partikelfysik - Geonomgår omorganisation

   Author : Samyak Parmar; [2021]
   Keywords : little group scaling; little group; spinor-helicity formalism; Physics and Astronomy;

   Abstract : This thesis aims to describe the little group scaling and how it simplifies the calculation of scattering amplitudes. The little group has the defining property that it leaves a particular four-momentum invariant, which is used to describe how the internal structure of a particle is transformed under the little group. READ MORE

6. 5. The Chirality-Flow Method for Massive and Electroweak Amplitudes

   University essay from Lunds universitet/Teoretisk partikelfysik - Geonomgår omorganisation

   Author : Joakim Alnefjord; [2020]
   Keywords : chirality-flow; chirality; flow; spinor-helicity; tree-level; diagram; amplitude; Physics and Astronomy;

   Abstract : In this thesis I extend the chirality-flow method to the full standard model at tree-level by including massive particles and electroweak interactions. The chirality-flow method is a new diagrammatic method for calculating Feynman diagrams that is based on the spinor-helicity formalism, that before this thesis was written had been worked out for massless QED and QCD at tree-level. READ MORE